<template>
	<div>
		<!-- 面包屑导航区域 -->
		<el-breadcrumb separator-class="el-icon-arrow-right">
			<el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
			<el-breadcrumb-item>数据统计</el-breadcrumb-item>
			<el-breadcrumb-item>数据报表</el-breadcrumb-item>
		</el-breadcrumb>

		<!-- 卡片视图区域 -->
		<el-card>
			<!-- 为 ECharts 准备一个定义了宽高的 DOM -->
    <div id="main" style="width: 780px;height:400px;"></div>
		</el-card>
	</div>
</template>

<script>
import _ from 'lodash'
import * as echarts from 'echarts'

export default {
  data() {
    return {
      options: {
        title: {
          text: '用户来源'
        },
        tooltip: {
          trigger: 'axis',
          axisPointer: {
            type: 'cross',
            label: {
              backgroundColor: '#E9EEF3'
            }
          }
        },
        grid: {
          left: '3%',
          right: '4%',
          bottom: '3%',
          containLabel: true
        },
        xAxis: [
          {
            boundaryGap: false
          }
        ],
        yAxis: [
          {
            type: 'value'
          }
        ]
      }
    }
  },
  created() {},
  // DOM 元素更新完成， 便于操作 DOM元素
  async mounted() {
    // 基于准备好的dom，初始化echarts实例
    const myChart = echarts.init(document.getElementById('main'))

    const { data: res } = await this.$http.get('reports/type/1')
    if (res.meta.status !== 200) return this.$message.error('获取图表数据失败！')
    res.data.series.forEach(item => {
      item.areaStyle = {}
    })

    // 使用刚指定的配置项和数据显示图表。
    myChart.setOption(_.merge(res.data, this.options))
  },
  methods: {}
}
</script>

<style lang="less" scoped>
</style>
